Home / 21,402.48-32,092.12-11,917.72

Finding the Fourth Proportional to 21,402.48, 32,092.12 and 11,917.72

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Solution

The fourth proportional to 21,402.48, 32,092.12 and 11,917.72 is: 17,870.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.48 : 32,092.12 = 11,917.72 : x
  2. Step 2: Convert to fraction form
    21,402.48/32,092.12 = 11,917.72/x
  3. Step 3: Cross multiply
    21,402.48x = 32,092.12 × 11,917.72
  4. Step 4: Simplify right side
    21,402.48x = 382,464,900.37
  5. Step 5: Solve for x
    x = 382,464,900.37/21,402.48
  6. Step 6: Final answer
    x = 17,870.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.